25Cr2MoV (GB/T 3077) is a chromium-molybdenum-vanadium alloy round steel designed for high-pressure/high-temperature service, with a precise chemistry: 0.22–0.29% C, 1.50–1.80% Cr, 0.40–0.50% Mo, 0.15–0.30% V, and 0.17–0.37% Si.
Chromium and molybdenum enhance corrosion resistance and high-temperature strength (up to 550°C), while vanadium refines grain structure to prevent creep (slow deformation under sustained load). Its mechanical properties include 900–1100 MPa tensile strength, ≥750 MPa yield strength, and 14% elongation-ideal for high-pressure valves in power plants and oil refineries. 25Cr2MoV is equivalent to ASTM A182 F22 and DIN 1.7709, with Chinese production focused on critical energy sector components.